To find an unknown angle in an "upside down triangle" (which I assume means an inverted triangle, or a triangle pointing downward), you need to know the properties of triangles. The sum of the angles in any triangle is always \(180\) degrees.
If you have one known angle measuring \(106\) degrees, you can find the unknown angle if you also have one other angle in the triangle. Let’s call the known angle \(A = 106^\circ\), the second angle \(B\), and the unknown angle \(C\).
You can use the formula:
\[ A + B + C = 180^\circ \]
If you know angle \(B\), you can rearrange the formula to find angle \(C\):
\[ C = 180^\circ - A - B \]
For example, if angle \(B\) is \(30^\circ\), you would calculate:
\[ C = 180^\circ - 106^\circ - 30^\circ = 44^\circ \]
So, the unknown angle \(C\) would be \(44\) degrees in that case.
If you do not know the second angle, then you cannot find the unknown angle with only one known angle. You would need additional information about the triangle.
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